Sit-stand desk



FIG. 1 is a right front top perspective view of a sit-stand desk showingmy new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a left rear bottom perspective view thereof.

The portions of the sit-stand desk shown in dotted lines do notconstitute a part of the claimed design.

CLAIM The ornamental design for a sit-stand desk, substantially as shownand described.